Dental press for compressing dental flasks.



'No. 669,03l. Patented Feb. 26, l90l. J. P. GDMES.

DENTAL PRESS FOR COMPRESSING DENTAL FLASKS.

(Application filed Nov. 26, 1900.) (In llodal.)

IN VE N T0]? F my ATTORNEY.

, m: dams versus 00.. moToLq'nQ. WASHINGTON. u. c,

siren 'rATns FFICE.

JOSEPH P. GOMES, OF BROOKLYN, NEW YORK.

DENTAL PRESS FOR COMPRESSING DENTAL FLASKS.

SPECIFICATION forming part of Letters Patent No. 669,031, dated February26, 1901.

Application filed November 26, 1900. Serial No 37,813. (No model.]

To all whom, it may concern.-

Be it known that I, JOSEPH P. GOMEs, a citizen of the United States,residing at New York city, borough of Brooklyn, county of Kings, Stateof New York, have invented certain new and useful Improvements in DentalPresses for Compressing Denial Flasks, of which the following is a full,clear, and exact description, reference being had to the drawings whichaccompany and form part of the same.

My invention relates to a press which is designed particularly for theuse of practicing dentists and in dental laboratories, in which one ormore dental flasks of any description now known and used by the dentalprofession may be placed and compressed for vulcanizing the substancecontained in the flasks. It is constructed in such a way as to beentirely independent of flasks to be compressed by it, is provided withcompressing-plates so made that equal pressure is exerted upon theflasks, and all its essential parts are detachable and independent ofeach other.

Certain minor improvements, which will be hereinafter particularlypointed out, are also covered by my invention.

In the accompanying drawings, Figure 1 shows in elevation a press madein accordance with my invention. Fig. 2 shows a plan of the topmostcompressing-plate. Fig. 3 is a section through A B of Fig. 2 and showsdetails of the two upper compressingplates. Fig. 4 is a plan showing thetwo bottom plates, one upon the other, and also showing details of armattachments to be hereinafter more particularly noted. Fig. 5 is asection through 0 D of Fig. 4. Figs. 6 and 7 show arms used ashereinafter described.

Similar numerals refer to similar parts throughout the several views.

1 is a wrench having a triangular key at its lower lower extremity,which easily fits into a socket 10, located in a screw 3.

4 is a circular plate in the center of which the screw 3 is located.This plate 4 is constructed so that a portion of it, 12, is raised aboutone-fourth of an inch above the rest of it, and at the extremities ofthis raised portion 12 are grooves 16, made to accommodate the clamps 13at the top extremities of the arms 9 or 23. This plate 4 is held in itsproper and relative position by uide-pins 2, which are firmly attachedto another plate 5 and which pass through openings 18 in plate 4. Threegnide-pins 2, as shown in the drawings, are provided with heads likepin-heads. If desired, they may be made Without those heads, and thenthe plate 4 will be easily detachable from the portion of the pressbelow for purpose of cleaning, 850. The screw 3 is easily detachablefrom the plate 4 and the wrench 1 is easily detachable from the socket10 in screw 3.

5 is another circular plate parallel to plate 4. At its center it isprovided with a slightlyraised portion 1), upon which the screw 3descends or from which it is released when operating the press. Theguide-pins 2 are firmly attached to this plate 5, as heretofore noted.This plate 5 is of sufficient size to entirely cover the top portion ofany flask 8 used in dentistry. It is provided with indentations 20 toadmit the arms 9 or 23 into their proper position, as will be readilyseen by referring to Fig. 1.

6 is another circular plate, also parallel to plates 4 and 5, upon whichthe flask 8 (any flask) rests when in position to be compressed. Uponthe outer edge of this plate, in three places directly beneath theextremities of 12 in plate 4, are slightly-raised portions 15, beneathwhich grooves are cut, into which hinges 14, at the bottom extremitiesof the arms 9 or 23, exactly fit. The plate 6 is provided upon itscircumference with three circular indentations 22, into which pinsprojecting upward from plate 7 fit, as will be hereinafter noted.

7 is another circular plate, upon which the press rests when it is to beoperated. It is provided with screw-holes 21 and is firmly screwed downupon a table 17. Three pins 11 project upward from it which exactly fitinto the indentations 22 of plate 6, as above noted, and by this meansrotary motion of the press is prevented while operating it by means ofthe screw 8 and Wrench 1.

9 and 23 are arms by which plates 4 and 6 are held together when thepress is in use. Their only difference consists in their length, theshorter to be used when but one flask is to be compressed and the longerwhen more than one flask is to be compressed at the same time.

The press is operated as follows: Place the hinges 14 of the arms 9 or23 in their position in the grooves beneath of plate 6 quire.

and then place plate 6 upon plate 7, so that the pins 11 of plate 7 fitinto the indentures 22 of plate 6. The hinges 14 rest upon the plate 7,and the arms 9 or 23 are held in position, as shown in Fig. 4, by themere weight of plate 6. Then place any flask 8 upon plate 6. If twoflasks are to be compressed at the same time, place one directly uponthe other and use either arms 9 or 23, as the case may re- Then upon theflask or flasks place plates 4 and 5, held together by guide-pins, sothat the extremities of 12 of plate lare directly above 15. Let thescrew 3 be sufficiently released and lift arms 9 or 23 upon their hingesuntil the clamps 13 upon the top extremities of the arms 9 or 23 fitinto the grooves 16 of plate 4:. Then insert the wrench 1 into socket 10and turn to right. The screw 3 descends upon 19 of plate 5, and as thescrew 3 and plate 5 come in contact plate 4 is lifted away from plate 6and by means of the tension of arms 9 or 23 pressure is exerted uponplate 5, through which it is directly transmitted to the flask or flasks8.

It is to be observed that the top portions of all dental flasks 24consist of plates independent of the remaining portions of the flasks.These plates 24 as now used become warped at their outer edges by reasonof unequal pressure exerted upon them, the pressure being confined byany press now in use to the central portion of the plate. As the plate 5in my press covers the entire top portion of this plate 24 thisdifficulty, now so common, is obviated.

When the screw 3 comes into contact with 19 of plate 5, one quick andsharp turn to the right will cause more than sufficient pressure uponthe flasks than is necessary for the purpose in view. The wrench 1 isthen removedby simply lifting it out of its socket, and-the entirepress, with its flask or flasks, may be lifted away from plate 7 and isthen ready to be placed in the vulcanizer.

After the process of vulcanizing is finished the press with flaskscontained in it are again placed upon plate 7. Insert the wrench 1 intosocket 10, turn to left, and the arms 9 or 23 fall away of their ownweight into the positions shown in Fig. 4. As at this time the press isvery hot the advantage of not having to handle the arms is obvious. Theplates 4 and 5 are readily removed and the flasks are ready for use. Allparts of the press are then readily detachable for cleaning, &c.

1 am aware that prior to my invention presses for the use of dentistshave been made in which a flask and press together have been combinedand in which arms and a wrench have been used'in a way similar to theuse of the arms and wrenchin my invention. I do not therefore claim thatthe improvements in my press coversuch'improvements broadly; but

WhatI do claim as my in.vention,and desire to secure by Letters Patent,is

1. In a dental press a combination of three parallel plates two of whichare held together in their relative positions by means of guidepins, andthe three connected by independent arms provided with clamps and hingesat their extremities substantially as described.

2. A dental press provided with three parallel plates, a screw andthree-connectingarms all of which are quickly and easily dotachable fromeach other substantially as described.

In testimony whereof I have signed my name to this specification, this21st day of November, 1900, in the presence of two subscribingwitnesses.

JOSEPH P. GOMES.

Witnesses:

ANNA D. EVANS, LUOIUS L. GILBERT.

